auto-changelog-generator.yml

name: Generate Changelog

on:
  # Manual trigger only
  workflow_dispatch:
    inputs:
      branch:
        description: 'Branch name'
        required: true

jobs:
  generate-changelog:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Setup Ruby
        uses: ruby/setup-ruby@v1
        with:
          ruby-version: 3.0

      - name: Install github-changelog-generator
        run: gem install github_changelog_generator

      - name: Generate Changelog
        run: |
          github_changelog_generator \
            -u ${{ github.repository_owner }} \
            -p ${{ github.event.repository.name }} \
            --token ${{ secrets.GITHUB_TOKEN }} \
            --output CHANGELOG.md

      - name: Commit updated CHANGELOG.md
        id: commit
        run: |
          git add CHANGELOG.md
          git config --local user.email "github-actions[bot]@users.noreply.github.com"
          git config --local user.name "github-actions[bot]"
          if git diff --quiet && git diff --staged --quiet; then
            echo "No changes in CHANGELOG.md, skipping commit."
            echo "commit_status=skipped" >> $GITHUB_ENV
          else
            git commit -m "Update CHANGELOG.md"
            echo "commit_status=committed" >> $GITHUB_ENV
          fi

      - name: Echo CHANGELOG.md
        run: cat CHANGELOG.md

      - name: Push changes
        if: env.commit_status == 'committed'
        uses: ad-m/github-push-action@master
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          branch: ${{ github.event.inputs.branch }}